bug0057 :: Non-eigenvectors from DGEEV, problem in balancing

see follow-up on lapackers on April 22nd from Jim "bug in DGEHRD"
"The balancing is choosing to scale some rows/columns by factors like 1e18,
which rather amplifies tiny rounding errors in the (presumably correctly)
computed eigenvectors of the balanced matrix, when balancing is undone at the end.
The expert driver interface dgeevx would let the user disable balancing, until
we figure out whether this is a bug or a feature, I’m not sure which."